Escape Route Marking for an Aircraft and Method for Producing an Escape Route Marking

Abstract

Escape route marking for an aircraft comprising photoluminescent pigments in a carrier material, which luminesce in the dark, the carrier material comprising silicone and the photoluminescent pigments having a mean particle size of less than 150 μm.

1 . Escape route marking for an aircraft comprising photoluminescent pigments in a carrier material, which luminesce in the dark, characterised in that
 the carrier material comprises silicone and   the photoluminescent pigments have a mean particle size of less than 150 μm.   
     
     
         2 . Escape route marking according to  claim 1 , characterised in that the mean particle size is less than 120 μm, preferably less than 100 μm. 
     
     
         3 . Escape route marking according to  claim 1 , characterised in that the silicone has a viscosity of 1·10 4  m Pa·s or less. 
     
     
         4 . Escape route marking according to one of  claims 1  to  3 , characterized in that the carrier material is configured to be transparent or translucent. 
     
     
         5 . Escape route marking according to  claim 4 , characterised in that the carrier material is coloured in a colour which is different from a colour of the photoluminescent pigments. 
     
     
         6 . Escape route marking according to one of  claims 1  to  5 , characterised in that the photoluminescent pigments contain strontium-aluminate. 
     
     
         7 . Escape route marking according to one of  claims 1  to  6 , characterised in that the weight component of the pigment is more than 35% by weight of the blend consisting of silicone and pigment. 
     
     
         8 . Method for producing an escape route marking for an aircraft comprising photoluminescent pigments, which are embedded in a carrier material, characterised in that the photoluminescent pigments have a mean particle size of less than 150 μm and are incorporated therein before processing the carrier material, silicone being provided as a carrier material. 
     
     
         9 . Method according to  claim 8 , characterised in that the mean particle size is less than 120 μm, preferably less than 100 μm. 
     
     
         10 . Method according to  claim 8  or  9 , characterised in that the mixture of silicone and photoluminescent pigments is capable of being cast after mixing. 
     
     
         11 . Method according to  claim 10 , characterised in that the escape route marking is cast. 
     
     
         12 . Method according to  claim 11 , characterised in that the escape route marking is cast in a thickness of 0.15 mm to 7 mm. 
     
     
         13 . Method according to  claim 12 , characterised in that the escape route markings is cast in a thickness of 0.25 mm to 5 mm. 
     
     
         14 . Method according to one of  claims 8  to  10 , characterised in that the escape route marking is extruded from the mixture of photoluminescent pigments and silicone. 
     
     
         15 . Method according to  claim 14 , characterised in that, after emerging from the extruder, the extruded strand is additionally provided with pigments. 
     
     
         16 . Method according to one of  claims 8  to  15 , characterised in that the mixture of silicone and photoluminescent pigments is bonded during processing to a plastics layer. 
     
     
         17 . Method according to  claim 16 , characterised in that a transparent plastics strip is inserted into a casting mould and subsequently the casting mould is loaded with the mixture of silicone and photoluminescent pigments. 
     
     
         18 . Method according to one of  claims 8  to  15 , characterised in that the mixture of silicone and photoluminescent pigments is coextruded with a further plastics material. 
     
     
         19 . Method according to one of  claims 8  to  15 , characterised in that a further plastics material is partially or completely cast around the cured carrier material. 
     
     
         20 . Method according to  claim 19 , characterised in that the further plastics material is cast in an injection-moulding process around the carrier material. 
     
     
         21 . Method according to  claim 19 , characterised in that the further plastics material is cast in the casting mould around the carrier material. 
     
     
         22 . Method according to one of  claims 18  to  21 , characterised in that the further plastics material forms a cover for the escape route marking.